Train-dispatching apparatus



Aug. 14, 192s.

R. L. PAGE TRAIN DISPATCHING APPARATUS Jwovnlfoc:

W www,

R. L. PAGE TRAIN DISPATCHING APPARATUS Aug. 14, 192s. y A 1,680,692

Patented Aug. 14, 1928.

PATENT OFFICE..

nonnar I.. rasa, or GREENVILLE, MISSISSIPPI.

TRAIN-DISPATCHING APPARATUS.

Application med September 8, 1925. Serial No. 55,099.

The present inventionrelates to train dispatching and wayside signallinsystems and apparatus, and aims to provide a novel and approvedapparatus of that kind where- I by the train dispatcher may keep. fullyinformed as to the movements of trains in or otherwise, orally by telehone or by telegraphic printed matter, suc as between em- 15 ployees andotlicials, or between ocials; and the apparatus may also be used for theconveyance of commercial telegraphic and telephonie communications suchasA are transmitted b the public telephone, telegraph and ra iocompanies.

The present apparatus provides for the followin functions: First, thedispatcher is informe when a train approaches a signal location. Second,the dispatcher is also in- 5 formed as to the particular train that 4isaproaching the si al location. Third, the ispatcher may t en set thesignal or sig nals at such signal location according to tratlcconditions or other circumstances. l0 Fourth, the trainmen maycommunicate by telephone with the dispatcher to receive instructions.Fifth, the dispatchermay operate a printing telegraph tickr. or otherinstrument for producing a written order or wn instructions for thetrain crew. 1 Sixth, the dispatcher has similar information about,control of and communication with all conv trol station vsets-*of thedivision or sect-ion within his jurisdiction. f l0 A more specific'object is the provision of an apparatus whereby the dispatcher' mayconveniently control and set. one or more signals at-a control. locationor station, for vestablishing or changing signals according to traic`conditionslfrom infomation obtained as to the movements of trains, so asto expedite traffic. l 0

VWith the foregoing and other objects 1n view, which will beapparent asthe description proceeds, the invention resides in the construction andarrangement of parts, as hereinafter described and claimed, it beingunderstood that changes can be made within the scope of what 1s claimed,without departing from the spirit of theinven- 55 tion.

The invention is illustrated in the accompanying drawings, wherein-1Figure 1 is a diagrammatical view of the apparatus showing only onecontrol llocation set,

Fig. 2 is a plan view of one of the switch actuators showing the switchopen,

Fig. 3 is a plan View of saidl actuator showing the swltch closed, and

Fig. 4 is a fragmentary view of said p switch.

The line wires 7 and 8 are extended alon the right of way throughout thelength o the division or section of road under the n supervision of thedispatcher, ,and constitute thetelephone circuit such as is used in thewell-known train dispatching a paratus. Said wires lead from- .aselector ey 9 in the dispatchers oiice byA means of which the dispatcherhas control of any number of" selectors (of well known Iconstruction andoperation) connected in multiple' with the wires 7 and 8, the receiver10 and transmitter 11 in the dispatchers'oice being conso nected in the.telephone circuit.

At the approach to each control station or" location there is atransmitter 12 connected in series with a pairof contacts 13 of a switchvdevice 14 and with the wires v7 and. a5 8, whereby when the contacts 13are bridged the transmitter 12 is'connected in the telephoneV circuit inorder Athat the dispatcher l may receive (bythe receiver 10) soundsimpressed on the transmitter 12. The trans- 00' mitter 12 isused forimpressing'in'the telephone `circuit characteristic .o'r identifyingsounds or audible signals to convey informa-y tion to the dispatcher.. i

The switch-device 14; the details of which 05 'will be described more.ullyhereinaten is controlled by an electromagnet 15 which is connectedby thewires or conductors 17 with a selector 16, a battery 18 beingdisposed in one of the conductors 17 to furnish current for the magnetl5. The selector 16 is connected by the conductors 19 with the wires 7and 8.

.The dispatcher is informed of the approach of a train toward a controllocation. Thus, an electric repeating phonograph 20 or other suitablesignal transmitting device is disposed adjacent to the transmitter 12and the record, sound producing means or indication of the phonograph ordevice is such as to produce a characteristic sound, audible signal orindication, which may be heard or received in the receiver 10 when thesounds or indications given out by the phonograph 2() are transmitted bythe transmitter 12 to the telephone circuit. The sound, audible signalor indication produced by the phonograph 20 is an identification of theparticular control station or location, in order to inform thedispatcher that a train is approaching the particular control loca'tion. The phonographs 20 at different approaches to control locationshave records, sound producing means or indications for producingdifferent sounds, audible signals or indications, in order that `theymay be differentiated by the dispatcher, even though several signals orindications may be received simultaneously due to several trainsapproaching different control locations simultaneously.

The phonograph 20 is disposed in a circuit 21 including the battery 22and a pair of contacts 23 of a switch device 24 (similar to the switchdevice 14), and said switch device 24 is controlled by an electro-magnet25 connected by the conductors 27 with a selector 26 which, like theselector 16, is connected by the wires or conductors 19 with thetelephone wires 7 and 8. A battery 28 is disposed in one of theconductors 27 to furnish current for the magnet 25.

At the approach to the control location, at a suitable distance from thewayside signals, a third rail or ramp 29 is disposed on the track,between the rails as shown, and the train or vehicle carries a wheel 31or other contact to roll or move over the ramp 29, said contact wheel 31being connected electrically with car wheels 5 of the train, so as to beconnected electrically with the rails 6. The ramp 29 is connected by theconductor 30 with one of the conductors 17 and one of the conductors 27,and a conductor 30 connects one of the rails 6 with the other conductors17 and 27. Consequently, when the contact wheel 31 moves over the ramp,the magnets 15 and 25 are energized so that the switch devices 14 and24, which are normally open, are operated to bridge the contacts 13 and23. The circuit includes ramp 29, conductor 30, corresponding conductors27 and 17, magnets 25 and 15 and batteries 28 and 18 (the magnet 15 andbattery 18 being in parallel relation with the magnet 25 and battery28), the conductor 30', corresponding rail 6, wheels 5 and contact wheel31. Themagnets 15 and 25 are thus energized whenever a train, carrying acontact wheel or member 31, approaches the corresponding controllocation or wayside signals. The switch 14 bridging the contacts 13 willconnect the transmitter 12 in the telephone circuit, and the contacts 23being bridged will close the circuit of the electric phonograph orindicator 20, which will continue to operate as long as.its circuitremains closed, so that the distinctive sounds, signals or indicationsare received by the transmitter 12 and impressed in the telephonecircuit so as to be heard in the receiver 10 by the dispatcher. Thiswill indicate to the dispatcher that a train is approaching thearticular control location.

The switch dldvices 14 and 24 are of similar construction as illustratedin detail in Figs. 2, 3 and 4. Each of said'devices includes a switch32, pivoted, as at 33, on a base 34, and having an angularly extendingarm 35. The switch is of the knife-blade type as shown to wedge betweenthe pair of contacts 13 or 23 for closing the corresponding circuit,although any suitable switch may be used. A catch 37 is pivoted, as at38, on the base 34 to engage the switch 32 and hold it in open position,and a retractile coiled spring 39 is connected to the catch 37 and arm35, and has a tendency to swing the switch 32 to closed position and tomove the catch 37 into enga ement with the switch. Said catch has a lookor lug 40 to engage the switch 32 and hold the switch in open position,as seen in Fig. 2, and when the catch is disengaged from the switch, thespring 39 swings the switch to closed position, as seen in Fig. 3, withthe hook 40 bearing against the end of the switch. Electromagnet 15 or25 is mounted on the base 34 and controls an armature lever 42 fulcrumedon the base, as at 42', a spring 43 moving the levex` 42 away from thearm 35 of the switch. A spring leaf 44 is secured to the catch 37 andhas a hook 45 and cam 46 at the free end thereof, with the leaf 44projecting toward the lever 42 and arm 35. The lever 42 carries a finger47 to engage the hook 45 when the lever 42 is swung by its attractionto. the electromagnct i The switch 32 is alternately closed and openedby the successive intermittent energizations of the magnet. Thus, withthe parts arranged as shownin Fig. 2, with the catch 37 holding theswitch 32 in open position, the attraction of the lever 42 to the magnetwill result in the finger 47 catching in the hook 45 and pulling theleaf 44 so as to .swing the catch 37 to releasing position,

' catch 37 to releasing position, the lever contacting with the arm 35will hold the switch disposed adjacent to the transmitter 121 53 islocated in the conductor 51 to su 32 in open position until the magnetis deenergized and the lever 42 returned to normal position, as seen inFig. 2, the switch 32 moving to closed position as the lever 42 returnsto normal position. The next time the magnet is energized to swing thelever against the pressure of the spring 43, the finger 47 moves pastthe hook 45, and the lever contacts with the arm 35 and swings theswitch 32 to open position. The catch 37 will immediately snap intoengagement with the switch, to hold the switch in open position. Theleaf 44 being moved to the position shown in Fig. 2 will bring the cam46 in front of the finger 47 so tliatwhen the magnet is deenergized andthe lever 42 returned, the'finger 47 moving under the cam 46 will springthe leaf 44 so that the hook 45 will. snap in rear of the linger 47, tothe position shown in Fig. 2. Thus, with the successive intermittentenergizations of the magnet the switch 32 is` alternately closed andopened, and will remain in either position until themagnet is againenergized.

The dispatcher is also informed as to the identilication of theparticular train which is approaching the control location announced bythe phonograph 20. Any suitable device may be used for this purpose. Asshown, a pair of ramps 48 and 49 is mounted on the track at the approachto the control location, being disposed beyond the ramp 29. Said ramps48 and 49 are connected by the respective conductors 50 and 51 with atelegraph ticker l52v which is Thus, when said transmitter 12 isconnected in the telephone circuit bythe switch device 14,the/telegraphic code of the ticker 52 may be transmitted to thetelephone circuit so as.

to be heard by the dispatcher. A batterly PP Y current for energizingthe ticker 52, and the train or vehicle carries the control shoes ormembers 54 and 55 to slide over the respective ramps 49 and 48. Thevehicle or train equipment includes .a conductor 56 connecting the shoe54 with a contact or brush l57, which co-operates with the contact wheelor drum 58 that is connected by a conductor 59 with the shoe 55.' Thewheel 58 has 'contact portions or segments thereon to engage the contact57 in succession when the wheel is rotated, for producing dots anddashes in telegraphic code, in order to identify the particularl train,each train having a contact wheel or drum 58 for producing a specificidentilicationvsignal, so that' thedispatcher may identify the train.The wheel 58 is connected to an electric motor 60 to be operated by themotor, and said motor is connected by the conductors 61 and `62 with theslice 55, which has the in sulation 63 between the conductors 6l and 62so as to normally open the motor circuit. The battery 64v is located inthe conductor 62 to furnish the current for operating the motor when theinsulation 63 is bridged. Thus, when the shoe 55 moves over the ramp 48,the insulation 63 is bridged, thereby connesting the conductors (S1-and62, so that the motor 60 is operated to rotate the contact wheel 58. Theshoes 54 and 55 moving over the ramps 49 and 48, respectively, will alsocomplete the telegraphic signalling circuit ofthe train and track, partof the circuit being on the train and Apart on the track. Thus, thetick-er is on the track while the telegraphic transmitter, comprising'the contact wheel '58, contact 57 and-motor 6() is located on thetrain. The circuit includes the battery 53, ramp 49, shoe 54,'conductor56, contact 57, contact wheel 58, conductor 59, shoe 55,-ramp 48conductor 50, ticker 52, and conductor 51. Thus, as the telegraphictransmitter on the train is 4operated by the motor 60, While the shoes54 and 55 move over the ramps, the ticker 52 is operated to give atelegraphic signal, which may be repeated inasmuch as the ramps48 and 49may be of any suitable length. The wheel 31 passes onto theramp 29before the shoes 54 and 55 pass onto the ramps 49 and 48, respectively,so that soon-after hearing the sound or signal given by the phonograph20, indicating the particular station or location, the ticker 52 will beheard to identify the particular train. The dispatcher will thereforehave information both as to the particularstation or signal locationwhich' the train is approaching and the particular train that isapproaching such location, in order that the dispatcher will be,informedas to the movement of trains, and so `that the Wayside signals may beset and controlled accordingly.

The wayside signals may be of any approved kind. As shown, ,at eachcontrol location there are 'electric signal lamps 65, 66 and othersaccording to the character of signals desired and the number ofvtracks.Said lamps are disposed in signal circuits. Thus, the circuit of thelamp 65 includes a conductor 67, a pair of contacts 71 of a switchdevice 72, conductor 70, battery 69 or. other sourcev of electricalenergy, and conductor 68. The circuit ofthe lamps 66 includes aconductor 67', a pair of contacts 71 of a switch device 72', and theconductor 70, battery 69 and conductor 68 which may be common to all ofthe signal circuits. The switch devices 72 and 72 are of the same typeas the switch devices 14 and 24 and are controlled by the respectiveelectromagnets 73 and 73.

There may be any number of signal lamp circuits. Thus, there may be oneor more lamps or signals for each track of a number of tracks. Lamps ofdifferent colors may be used for giving clear, caution, danger' andsimilar signals, or different numbers of lamps or combinations of colorsmay be used in the different circuits according to prevailing waysidesignal practice. As shown, there is a single lamp in the first circuitand two lamps 66 in the second circuit for purpose of illustration. Oneswitch device is used for each signal circuit and there may be anynumber of such devices and signals controlled thereby according to therequirements or circumstances.

The signal devices of the control station sets are controlled by asingle electrical cir-l cuit in addition to the telephone circuit, saidsingle circuit including the wire 8 of the telephone circuit and a thirdline wire 74. At cach control station a conductor or wire 75 isconnected to the wire 8 and to one terminal of each of the magnets 73,73 of the signal control devices, and a conductor or lead wire 76 isconnected to the line wire 74 and to a commutator'78. A telegraph key 77is connected in the telegraph or make and break circuit including theline wires 8 and 74, and means are provided whereby the key 77 may beconnected in succession with the several magnets `73, 73 of any controlstat-ion, said means of the control location set shown including thecommutator 78 forr connecting the magnets 73, 73 of the control stationin succession in the telegraph or signal control circuit. The commutator78 includes a disk or wheel 79 operated through any suitable gearing byan electric motor 80, said disk 79 having a contact lug or brush 81 toengage in'succession a series of contact segments 82 which are connectedby the conductors 83 with the magnets 73, 73. Thus, the first contactsegment 82 is connected tothe rst magnet 73, the second segment 82 isconnected to the second magnet 73 vand so on. The battery 84 isconnected between the key 77 and the wire 8. When the contact brush 81engages the rst segment 82, the telegraph key 77 may be connected incircuit with the first magnet 73, such circuit including the line wire74, telegraph key 77, battery 84, line wire 8, conductor 75, magnet 73,first conductor 83, first segment 82, contact brush 81, disk y79 andvconductor 76. By operating the telegraph key 77 the magnet 73 in suchcircuit may be energized to either open or close the switch device 72.

The motor 80 is started under the control of the dispatcher. Thus, aselector 85 is connected to the telephone wires 7 and 8, and whenproperly controlled by the selector key 9 will connect wires 86 and 88.The wire 88 and a wire 87 are connected to the line wires 8 and 74,respectively, of the telegraph circuit, and an electromagnet 89 isconnected to the conductor 87 and to the wire 74. The conductors 86 and87 have contacts 91 normally bridged by a switch 92. Therefore, when theselector 85 is controlled to connect the conductors 86 and' 88 forseveral seconds, this connects the magnet 89 between the wires 8 and 74of the telegraph circuit in order to give the dispatcher an opportunityto start the motor 80. This is done by closing the telegraph key 77,which completes an electric circuit including the battery 84, key 77,line wire 74, magnet 89, conductor 87, contacts 91 and switch 92,conductor 86, conductor 88 and line wire 8. The magnet 89 beingenergized will reverse the switch 92, moving said switch away from thecontacts 91 so as to immediately deenergize the magnet 89, and theswitch is brought against the contacts 93 in the circuit 94 of the motor80 including the battery or source of electrical energy 95. yThe motor8O therefore operates to rotate the disk 79, and when the disk has madeone complete revolution, the contact brush 81 engages the switch-92 andswings said switch back to normal position away from the contacts 93 andagainst the contacts 91. The motor is therefore stopped when the disk 79has completed its revolution.

It is apparent that the electromagnet 89 may be controlled directly fromthe selector 85 the same as magnets l5, 25, lll and 121 are controlledfrom the respective selectors 16, 26, 112 and 122.

In order that the dispatcher may be informed when the successive magnets73, 73 of a control station are connected in the telegraph circuit, anelectric bell 96 or other audible signal device is provided, beingdisposed adjacent to a transmitter 101 located at the control or signallocation so that the bell or signal may be heard over the tele phonecircuit. One terminal of the bell 96 is connected by a conductor 97 withthe bat tery 98 and conductor 76, and thc other terminal of the bell isconnected by a conductor 99 with contacts 100 disposed in advance of thecontact segments 82. Just 'before the contact brush 81 engages a contactsegment 82 the brush 81 will engage the corresponding contact 100. Thiscompletes thc circuit of the bell 96, including the battery 98,conductor 76, disk 79, brush 81, correspending contact 100, conductor99, bell 96 and conductor- 97. The bell or signal being heard over thetelephone circuit for the first time will inform the dispatcher that thetelegraph key' 77 vis being connected in circuit. with the magnet 73.The bell 96 rings )ust priorA to the connection of each magnet 73, 7 3of a control station set in the telephone circuit.

against the contacts 103 to connect the transmitter 101 in the telephonecircuit (by way of the conductor 102, contacts 103, switch 104 andconductor 75) whenevervthe motor 80 and the commutator are in operation.

A printing telegraph ticker 106 maybe provided at each controlstationfor printf' ing on a tape or sheet a written message or order. Theticker 106 is adapted ,to be connected in the telegraph circuit. Thus,one terminal of the ticker 106 is connected by the conductor 106 withthe wire 8, and a conductor 107 isconnected to the wire 74, with a pairof contacts 109 between the conductor 107 and the ticker 106. Battery108 is disposed in the conductor 106. A switch device 110, similar to'the switch devices 14 and 24, is used to bridge the contacts 109 andconnect the ticker in the circuit of the wires 8 and 74. The device 110is controlled by.

an electromagnet 111 connected to a selector 112 which is connected tothe wires 7 and 8.

The dispatcher may therefore connect the ticker 106 in the telegraphcircuit for trans-v `mitting a message or order, by controlling theselector 112 by the key 9, to close the switch device 11'0 and bridgethe contacts 109. Then, when the message has /been transmitted theselector 112 may be controlled to o en the switch device 110 anddisconnect t e ticke'r 106 from 'the telegraph circuit. Should theconductor, engineer or any other person desire to communicatewith thedispatcher, a telephone transmitter 115 and receiver 114 are provided atthe control station, and the connection thereof in the telephonecircuitis controlled bya 'switch device 120, similar to the devices 14 and'24,the device 120 being controlled by an electromagnet 121 connected to aselector 122 which is connected to the wires 7 and 8. The receiver 114and the transmitter 115 are connected by a suitable telephone set 116with the wire 8 and a conductor 117 having the battery 119 therein. Thedevice 120 when in closed position connects the cony nected to the wires8 and `1,26 so as to signal to the dispatcher the particular controlstation which is calling (similar to an ordinary call system).

If so desired, automatic train control means maybe used to prevent thetrain from passing signals set against it. Any suitable devices may beusedv for this purpose. As shown, electromagnets 127 and 128 aredisposed in the signal circuits in series with the respective lamps 65and 66, and are mounted on the track, for 'operating armatures orswitches 129 and 130 carried by the train.

The switches 129 and 130 are disposed in stick .circuits 131 and 132,yrespectively, including the electromagnets 133 and 134 and switchesV 135and 136, respectively.A The electromagnets 127 and 128 have permanentmagnet cores, the flux of-which is neutralized when the coils areenergized by the closing 'of the signal circuits so that the armaturesor switches will not be affected in passing the signal location.However, when either or both of the electromagnets 127 and 128 aredeenergized, the attempt ofthe train to pass will result in thecorresponding switch or both switches 129 and 130 being opened-by thepermanent magnet flux of the cores, to open one or both of the circuits131-132. When either of said circuits is openedto drop the switch 135 or136 the circuit will remain open, and the switches 135 and 136 maycontrol 4the air brakes, power or other means for retarding or stoppingthe train according to the signals set against it. The switches 135 and136'may be under lock and key so that they cannot be restored except byan authorized person. However, various well known or suitable traincontrol devices may be used in connection with the signal devices toobtain automatic retarding or stopping of the train if the engineer doesnot obey the signals set against him.

The operation is as follows: When a train approaches a signal location,the contact wheel 31 moving over the ramp.29 will `result in the magnets15 and 25 being energized so that the switch devices 14 and 24 are 0p-`erated to bridge the'contacts 13 and 23. Thephonograph 2O is thereforeoperated, and the transmitter is connected in thetelephone circuit, andthe dispatcher hearing the distinctive sounds or audible signals in thetelephone circuit will be informed that a train is a preaching theparticular control station. 'Fhem the shoes 54 and 55 passing over theramps 49 and 48 will signal from the train to the train dispatcher, by.telegraphic code, the particular train that is approaching the signallocation. The circuit of the ticker 52 is opened and closed by the wheelor device 58 on the train so that the ticker transmits theidentification code of the train. The motor 60 and wheel 58 are onlyoperated while the shoe 55 is moving over the ramp 48 so that theinsulation 63 1s bridged. Being informed that a train is approaching a secified signal location, and being also in ormed as to the partlculartrain; the dispatcher may then set the signals accordingly, depending ontraffic conditions. When desired, the phonograph 20 may be stopped byenergizing the magnet 25 agam through control of the selector 26 b y theselector key 9, to open the switch devlce 24. It is thus possible to cutout the phonograph when the dispatcher has heard same, in order to avoidconfusing sounds or signals. The

transmitter 12 is likewise readily cut out of the telephone circuit bycontrolling the selector 16 from the key 9 to open the switch device 14.The switch ,devices 14 and 24 must be o ened by energizing the magnets15 and 25 by way of the selector key 9 after the train has passed, and,before the next train approaches, in order that control of the magnets15 and 25 from the ramp 29 will close said switch devices.

To set the signal of the control station which the train is approaching,the selector key 9 is operated b the dispatcher to control the selector85 of the particular station, so as to connect the magnet 89, in thetelegraph circuit including the battery 84, telegraph key 77, wire74,\`magnet 89, conductor 87, contacts 91 and switch 92, conductor 86,conductor 88 and wire 8. By closing the key 77 the magnet 89 isenergized to move the switch 92 against the contacts 93. kAt the sametime, the switch 92 is moved away from the contacts 91 to openthevcircuit of the magnet 89. The switch 92 remains in either of itsreversed positions until moved, either by a positive impulse due to theenergization of the magnet 89 or to the engagement of the brush or lug81 with the switch 92, and when the switch 92 bridges the contacts 93 itcloses the -circuit 94 of the motor 80, so that the motor is started andwill rotate the disk 79 of the commutator 78. The brush 81 engaging thefirst contact 100 will ring the bell 96 and the transmitter 101 beingconnected to the telephone circuit by the closing of the switch 104 bythe energized magnet 105 will enable the dispatcher to hear the bell,thus giving him a signal that the commutator 78 is in operation. Thebrush 81` engages the first contact segment 82 and connects the firstmagnet 73 of the signal control lmagnet 73, conductor 85 and wire`8. If

after the first ringing of the bell 96 is heard, the dispatcher desiresto "bange the first signal, he closes the key 77 as to energlze themagnet 73 of the first signal control device, to open or close thecircuit of the lamp 65 and electromagnet 127 as the case may be. Thelamp 65 may therefore be lighted or extinguished. Then, as the brush 81leaves the first segment 82 it engages the second contact 100, againringing the bell 96 and 1nforming the dspatcher that tlu.l next signalcontrol connection is being made. When the brush 81 engages the secondsegment 82 the magnet 73 of the second signal control device isconnected in the telegraph circuit, and the dispatcher may then set thesecond signal if he wishes. In this manner, as the disk 79 makes acomplete revolution the magnets 73, 73 of the several signal relays areconnected in succession in the circuit of the telegraph key 77 so thatthe dispatcher may set the several signals according to trafficconditions and other circumstances. The signal lamps or other signaldevices may be used for signals of all different sorts for trainmovements, not only to indicate clear, caution and danger conditions,but also the tracks or sidfngs which the train should take.

4The signals may also be used to notify the engineer or conductor to getinto communication with the dispatcher, and a single control station mayalso 'control the signals of any number of tracks.

Should the dispatcher desire, as hereinbefore described, the ticker 106may be used for producing a printed message or order, and 1f theengineer, conductor or other person desires to communicate with thedispatcher, the call key 124 is o erated whereby the annunciator 123 inthe dlispatchers ofiice Will lnform the dispatcher of the particularcontrol station which is calling. The dispatcher may then, b. thecontrol of the selector 122,connect the transmitter 115 and the receiver114 of the control station lset 1 in the telephone. circuit so thatconversation may be had between the dis atcher and the person calling.The transmltter 115 and receiver l114 are cut out of the telephonecircuit byopening the switch device 120 when l the magnet 121 is againenergized by the operation of the selector 122.

In order that the dispatcher may know the position of the switches 14,24, 72, 72', et al. he may have a chart before him indicating thepositions of the various switches. It is also possible to use suitableindicators in the dispatchers office, one for each switch, to indicateWhether the switch is on or off. It is also possible to have miniaturesets in the dispatchers oflice corresponding to the various controllocation sets, with suitable indicators, so that the dispatcher may noteat a glance the conditionof the various devices of the different controllocations. It will therefore be apparent that provision may be made inorder that the dispatcher will have .l intelligent control of thevarious devices. In

' and identifications of the trains and control locations, and the otherdevicesof the ap aratus may also be of any suitable kind.

or protection at isolated places against malicious persons ortrespassers, casings may be used to house the devices and may alsoprotect the devices from the elements during adverse weather conditions.

Having thus described the invention, what is claimed as new is a 1. Atrain dispatching system comprising a telephone circuit including adispatchers receiver, and train-controlled means at the approach to eachof a plurality of control i y va telephone c1rcu1t including adispatchers locations of the track operable when a train passes totransmit distinctive telephonie sound waves tosaid circuit.

2. A train dispatching system comprising a telephone circuit including adispatchers receiver, train-controlled meansat .the approach to eachoiga plurality of control locations of the track operable when a train lpasses to repeatedly transmit distinctive telephonic sound waves to saidcircuit, and means controlled by said circuit and selectivelycontrolling the rstnamed means to stop such transmission of sound wavesto the circuit.

3. A train dispatching system comprising a telephone circuit including adispatchers receiver, distinctive' telephonie soundwave v producingmeans at the approach to each of a plurality of control locations of thetrack, and train-controlled means for each of said means operable when atrain passes to bring the corresponding irstnamed means into operationand to connect it with said circuit for transmission of the sound Wavesto said circuit.

operablewhen a train passes and controlling the 1 corresponding soundwave producer to bring said sound wave producer into operation, and alsooperable to connect said sound wave producer with said` circuit vfor thetransmlssion of the sound waves-to said cir cuit, and means selectivelycontrolled by said circuit for stopping said sound wave producers. t

5. A train dispatching system comprising a telephone circuit including adispatchers receiver, a transmitter for each of a pluralityof controllocations of the track, a

phonograph cooperable with each transmitter, and train controlledmeansfor connectlng the corresponding transmitterto said c1rcu1t -andbringing the companion phonograph into operation when a train approachesa control location.

6. A train dispatching system comprising a telephone circuit including adispatchers receiver, a transmitter for each of a'plurality of controllocations of the track, a repeating phonograph cooperable witheachtransmitter, train-controlled vmeans for connecting the transmitter of acontrol location to said circuit and bringing the correspondingphonograph into operation when a train approaches such control location,and means controlled by said circuit and selectively controlling saidtransmitters and phonographs to disconnect the transmitters from thecircuit vand to stop the phonographs.

7. A train dispatching system comprising receiver and a dispatcher-sselector key, in combination with a 'set of devices for the approach toeach of a plurality of control locations of the track, including anelectrically operable phonograph, an electrically operable switch devicecontrolling said phonograph,` means for transmit-ting. the sounds fromsaid phonograph to said circuit, train-controlled means controlling sadswitch device for. bringing the phono- Graph into operation when a trainpasses. and aselector controlled by said circuit and controllincr saidswitch device to control the phonograph from said circuit and selectorey. y

8. A train dispatchng system comprising a telephone circuit including aldispatchers receiver and a dispatchers selector key, of a set ofdevices for the approach to each of a plurality of control locations ofthe track, including a transmitter, an electrically operable phonograph,an electrically operable switch device controlling said phonograph, anelectrically operable switch device for connecting the transmitter insaid circuit` train-controlled means .controlling both of said switchdevices for connecting the transmitter in said circuit and bringing thephonograpli into operation when a trainpasses, .and selectors controlledby said circuit and individually controlling said switch devices.

9. A train dispatching system comprising an electrical circuit includinga dispatchers indication receiver, aftrain-carried identifyingindication transmitter operable at a substantially uniform speedindependently of the speed of movement of the train, and means at theapproach to a control location of the track cooperable with saidtransmitter when the train passes for transmitting the indications tosaid circuit.

10. A train dispatching systeln comprising a telephone circuit includinga dispatchers receiver, a train-carried identifying code transmitteroperable at a substantially uniform speedindependently of the speed @ofmovement of the train, a sound producer at theapproach to a controllocation of the track, and cooperable with said transmitter when thetrain passes for the control of said sound producer from saidtransmitter, and means for transmitting sounds of saidsound producer tosaid circuit. l

l1. A train dispatching system comprising an electrical circuitincluding a dispatchers receiver, a train-carried identifying telegraphcode transmitter operable at a substantiall transmitter when the trainpasses, a transmitter cooperable with said sound producer, and meanscontrolled by said circuit for connecting the lastnamed transmitter Withand disconnecting it from saidcircuit/ 13. A train dispatching systemcomprisin an electrical circuit including a dispatcher s indicationreceiver, la train-carried identifying indication transmitter, means atthe approach to a control location of the track in- .cluding cooperatingelements on the train and track for transmitting the indications tosaidcircuit, and operating means for said transmitter controlled by saidelements to operate the transmitter when said elements are cooperating.

14. A train dispatching system comprising an electrical circuitincluding a dispatchers receiver, a train-carried identifying tele graphcode transmitter, a ticker at the appreach to a control location of thetrack, cooperable means on the train and track including cooperableelements for the control 4from said circuit, train controlled meansuniform speed independently of. the spec of movement of the train, aticker.

of said ticker by said transmitter when a train passes, means fortransmitting the indications of said ticker to said circuit, and meansfor operating said transmitter controlled by said elements to bring thetransmitter into operation when said elements are cooperating. Y

l5. A train dispatching system comprising an electrical circuitincluding a dispatchers indication receiver, a train-carried identifyingindication transmitter operable independently of the speed of movementof the train, means controlling said transmitter and operable to bringit into operation when The train approaches a control location of thetrack, and means on the track cooperable with said transmitter fortransmitting the indications to said circuit.

16. A train dispatching system comprisin a telephone circuit including adispatchers receiver, a telephone sound transmitter for each of aplurality of control locations of the track, switch devices forconnecting said transmitters with and disconnecting them 90 controllingsaid devices for automatically connecting the corresponding transmitterwith said circuit when a train approaches a control location, traincontrolled means for impressing distinctive train location andtrain-identifying sound Waves in said transmitters when trains approachthe corresponding control locations, and selective means controlled bysaid circuit and controlling said switch devices.

17. A train dispatching system comprising a telephone circuit includinga dispatchers indication receiver, a tele hone transmitter at each of aplurality o control locations of the track arranged for transmittingtelephonic sound Waves to said circuit, and train-controlled means forproducing distinctive sound Waves in said transmitters as trainsapproach the corresponding control locations.

18. A train dispatching s stem comprising a telephone circuit inclu in adispatchers indication receiver, and train-controlled means operable ata substantially uniform speed independently of the speed of movement ofthe train for transmitting distinctive indications to said circuit whentrains approach a plurality of control locations of the track so as toidentify the particular control locations, and to transmit otherdistinctive indications to said circuit to identify the particulartrains.

19. A train dispatching system comprising a telephone circuit includinga dispatchers receiver, train-controlled means at the approach to eachof a plurality of control locations of the track operable at'asubstantially uniform speed independently of the speed of movement ofthe train when ,a train paasses to transmit distinctive indicallO , la'rcontrol location, vand train controlled the speed means operable at asubstantiall 'uniform speed in ependently of the spee of movement of thetrain when a train approaches one of said control locations to transmitdistinctive `indications to said circuit to identi the particular train.

train dispatchingl system compris-` ing an electrical circuit inc u inga dispatchers receiver, train-controlled means at the approach to eachof a plurality of control locations of the track operable at asubstantia-lly uniform speed independently of of movement of the trainwhen a train passes a point of the track to transmit distinctiveindications to said circuit to identify the 1particular controllocation, and train contro ed means including cooperable elements on thetrack and train operable at a substantially uniformv speed independentlyof the speed of movement VAof the train for transmitting otherdistinctive indications to said circuit at 'a point beyond the aforesaidpoint toidentify the particular train.Y A

21. A train dispatching system comprising a telephone circuit includirla dispatchers receiver, transmitters a pted to transmit sound waves tosaid circuit,.train controlled distinctive sound producers for differentcontrol locations of the track cooperable with said transmitters andbrought .into operation when a train approach the rticular controllocation, other sound proucers cooperable with said transmitters, and atrain-carried identi code transmitter cooperable with the astnamedtransmitters when the train approaches the corn responding controllocations, for identifying tliJev train.

22. A trainv dispatching system compris- 4 ing an electrical circuitYincluding a dispendently of the a telephone circuit including receiverand a diiatche s transmitters 'for ,di

patchers indication receiver, train-controlled means at. the a roach toeach of a plu-V rali ofcontro ocations of the track operab e at asubstantiall speed-indespeed of movement of thetrainwhenatraintotransmitdistinctive indications to said circuit toiden- .tify the particular control location, a traincarried identifyingl operable at a substantiall uniform vspeed independently of the ofmovement of the train, and means at each of said aprable with saidtransmitter preaches coope h when the train aes for transmitting theindications to said circuit.

23. A train dispatching system comprisin a dispatcher s selector key,

of the track, electrically o Y e distinctive sound producers coo ra ewith said trans- 'tters for identifying theb connecting indicationtransmitter erent control locations necting said transmitters in saidcircuit train-controlled means controlling both o4 said devices at eachcontrol location .for conthe corresponding transmitter in said circuitand bringing the corresponding r sound producer into o ration when atrain passes, a ticker at eac of said approaches coopeivable with saidtransmitter, a traincarried identif ing telegraph code transmitter,cooperahle' means on the train and -track for the control of saidtickers by said telegraph code transmitter when the train passes, andselectors controlled by .said cirr cuit and individually controllingsaid switch Y devices. 24. A train dispatching system including aplurality of signal devices at a control location of the track, acontrol circuit including a Vdispatchers key, and means operable forconnecting all of said devices insuccession in said circuit for theindividual control thereof by said key.

25. A train dispatchin system compris-- ing a pluralit of si evices at acontrol location of t e trac a control circuit includjng a dispatcherskey, and means operable for connecting all of said devices in successionin said circuit for the control of said devices one at a time, by saidkey.

26. A train dispatching system including a plurality' of signals at acontrol location v of the track, switch devices controlling said icosignals, a control circuit including'a dis- A patchers key, and acommutator device opei-, able for connecting all of said switch devicesinsuccession in said circuit for the individual control of said switchdevicesI by said key.

27. A train dispatchingn'systeminclldllg a plurality of signal-,devicesat each of a.,V plurality of control locations of the track,

an electrical circuit `having a'fdispatchers selector key, a signal'control circuit including a di atchers signal control key, means at eacho said control locations o rable for connecting all o'f thecorrespondiiig signal devices in succession in* the al control circuitfor the individual contro of said de-v vices by the signal control key,and selectors iis in the firstnamed circuit controlling the 't lastnamedmeans. .e

28. A train 'dispatching sistem including a plurality of signals at eacof a plurality of control locations of the track, an electrical circuitincluding a dispatchers-selectorfkey, a si al Acontrol circuit inclupate ers signal control key, switc devices at each of said controllocations contro said signals, a commutator device at eac v of saidcontrol locations operablefor connecting the correspondingSwitchdevices'in succession ingsaid signal contrelcrcuit for the controlof the signals by said signal control key, and selectors in theirstnamed circuit controlling the commutator devices.

29. A train dispatching system including a plurality of signals at eachof a plurality of control locations of the track, an electrical circuitincluding a dispatchers selector key and a dispatchers receiver, asignal control circuit including a dispatchers signal control key,switch devices at each of said con-` trol locations controlling saidsignals, a commutator device at each of said control locations operablefor connecting the corresponding switch devices in succession in saidsignal control circuit for the control of the signals by said signalcontrol key, selectors in the firstnamed circuit controlling thecommutator devices, and m'eans controlled by each commutator device forproducing indications in the iirstnamed circuit before each switchdevice is connected in said signal control circuit.

30. A train dispatching system including a plurality of signal devicesat a control location of the track, a dispatchers signal control key, adispatchers selector key, and means controlled by said selector key andoperable by a single completed operation for electrically connecting thesignal control key individually in succession with said signal devices.

31. A train dispatching system including a plurality of signal devicesat a control location of the track, a dispatchers signal control key, adispatchers selector key, and-a commutator device controlled by saidselector key and operable by a single completed operation forelectrically connecting the signal devices in succession with saidsignal control key.

32. A train dispatching system comprising a telephone circuit includinga dispatchers receiver and a dispatchers selector key, train-controlledmeans for transmitting distinctive indications to said circuit whentrains approach a plurality of control locations of the track so as toidentify the particular control locations, and to transmit otherdistinctive indications to said circuit to identi the particulartrains', a set of signal devlces at each control location, a controlcircuit including a dispatchers signal control key, a selector for eachset of signal devices controlled by said telephone circuit, and meanscontrolled by each selector for automatically connecting the signaldevices of the corresponding set in succession with the control circuitfor individual control -of said signal devices by the signal controlkey.

33. A train dispatching system comprisin a telephone circuit including adispatcher s receiver and a dispatchers selector key, train-controlledmeans for transmitting distinctive indications to said circuit whentrains approach a plurality of control locations of the track so as toidentify the particular control locations, and to transmit otherdistinctive indications to said circuit to identify the particulartrains, a set of signal devices at each control location, a controlcircuit including a dispatchcrs signal control key, a selector for eachset of signal devices controlled by said telephone circuit, meanscontrolled by each selector for automatically connecting the signaldevices of the corresponding set in succession with the control circuitfor the individual control of said signal devices by the signal controlkey, and other selectors controlled by said telephone circuit andcontrollin the rstnamed means to stop such transmision of indications tosaid telephone circuit. l

34. A train dispatching system comprising an electrical circuitincluding a dispatcher s printing transmitter, printing devices atdifferent locations of the track, and means for selectively connectingsaid devices with said circuit.' y

35. A train dispatching system comprising two electrical circuits, oneincluding a dispatchers selector key and the other including adispatchers printing transmitter, printing devices at differentlocations oi the track, and selectors controlled by the firstnamedcircuit for selectively connecting said devices with the secondnamedcircuit.

36. A train dispatching s stem comprising an electrical circuit incluing a dispatchers selector key, another electrical circuit including adispatchers printing transmitter, printing devices at differentlocations of the track, switchdevices for connecting said printingdevices with the secondnamed circuit, and selectors controlled by thefirstnamed circuit and controlling said switch devices.

37. A train dispatchin stem comprisin a telephone circuit incllu ing adispatchers indication receiver, a tele hone transmitter at each of aplurality o locations of the track arranged for transmitting telephoniesound waves to said circuit, and

means controlled at distances from said transmitters for selectivelyconnecting said transmitters with said circuit.

38. A train dispatchin system comprising a telephone circuit inc uding adispatchers indication receiver, a' telephone transmitter at each o f aplurality of control locations of the track arranged for transmittingtelephonie sound waves to said circuit, and train controlled means forconnecting said transmitters with said circuit when trains approach andpass said locations.

39. A train dispatching system comprising` a telephone circuit includinga dispatchers indication receiver, a, tele hone translll mitter at eachof a plurality o locations of the track f arranged for transmittingtelephonlc sound waves to said circuit, and

means controlled at the location of the dispatchers indication receivervfor selectively connecting said transmitters with said circuit.

40. A train dispatching system comprising a telephone circuit includinga dispatchers indication receiver, a telephone transmitter at each of aplurality of locations of the track arranged for transmitting tele- 10phonic sound waves toA said circuit, means controlled from said circuitfor selectively connecting said transmitters with-said circuit and meansat the 'location of said dispatchers indication receiver and connectedto said circuit to control the aforesaid means selectively.

In testimony whereof I hereunto aiiix my signature.

ROBERT L. PAGE.

